//
//  JFCountdownHelper.h
//  JFBase
//
//  Created by Alan Wang on 2019/5/14.
//  Copyright © 2019 Alan Wang. All rights reserved.
//

#import <Foundation/Foundation.h>

NS_ASSUME_NONNULL_BEGIN

typedef BOOL(^CountdownActionBlock)(dispatch_source_t timer);

@interface JFCountdownHelper : NSObject
+(void)countdownTimeInterval:(double)timeInterval action:(CountdownActionBlock)block;
@end

NS_ASSUME_NONNULL_END
